Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	May. 30, 2015	May. 31, 2014	Jun. 01, 2013
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 162,281	$ 109,807	$ 50,761
Other comprehensive income, before tax:
Unrealized holding gain (loss) on available-for-sale securities, net of reclassification adjustments	(143)	392	724
(Increase) decrease in accumulated postretirement benefits obligation, net of reclassification adjustments	(741)	255	(89)
Other comprehensive income (loss), before tax	(884)	647	635
Income tax (benefit) expense related to items of other comprehensive income (loss)	(345)	252	247
Other comprehensive income (loss), net of tax	(539)	395	388
Comprehensive income	161,742	110,202	51,149
Less: comprehensive income attributable to the noncontrolling interest	1,027	600	338
Comprehensive income attributable to Cal-Maine Foods, Inc.	$ 160,715	$ 109,602	$ 50,811